select by famhash: Add methods to get param in bot

We need a method as callback to get bot specific params passed through
to our bot class.
Introduce -famhash parameter to work on specific famhash

Related Task:[FS#146](https://fs.golderweb.de/index.php?do=details&task_id=146)

red.py

@@ -60,7 +60,7 @@ def prepare_bot( task_slug, subtask, genFactory, subtask_args ):
     @rtype  tuple
     """
     # kwargs are passed to selected bot as **kwargs
-    kwargs = dict()
+    kwargs = subtask_args
 
     if not subtask or subtask == "discparser":
         # Default case: discparser
@@ -83,6 +83,25 @@ def prepare_bot( task_slug, subtask, genFactory, subtask_args ):
     return ( subtask, Bot, genFactory, kwargs )
 
 
+def parse_red_args( argkey, value ):
+    """
+    Process additional args for red.py
+
+    @param argkey The arguments key
+    @type argkey str
+    @param value The arguments value
+    @type value str
+
+    @return Tuple with (key, value) if given pair is relevant, else None
+    @rtype tuple or None
+    """
+
+    if argkey.startswith("-famhash"):
+        return ( "famhash", value )
+
+    return None
+
+
 def main(*args):
     """
     Process command line arguments and invoke bot.
@@ -110,7 +129,7 @@ def main(*args):
 
     # Parse local Args to get information about subtask
     ( subtask, genFactory, subtask_args ) = jogobot.bot.parse_local_args(
-        local_args )
+        local_args, parse_red_args )
 
     # select subtask and prepare args
     ( subtask, Bot, genFactory, kwargs ) = prepare_bot(